GuzzleHttpBundle

The GuzzleHttpBundle provide a guzzle client as symfony service.

Installation

Require the bundle in your composer.json file :

{
    "require": {
        "m6web/guzzle-http-bundle": "~2.0",
    }
}

Register the bundle in your kernel :

// app/AppKernel.php

public function registerBundles()
{
    $bundles = array(
        new M6Web\Bundle\GuzzleHttpBundle\M6WebGuzzleHttpBundle()
    );
}

Then install the bundle :

$ composer update m6web/guzzle-http-bundle

Usage

Add the m6web_guzzlehttp section in your configuration file. Here is the minimal configuration required.

# app/config/config.yml
m6web_guzzlehttp:
    clients:
        default: ~
        other:
            base_uri: "http://domain.tld/"

All subkey under clients defines an instance of guzzle http client. These services are named m6web_guzzlehttp_+subkey expect for the default subkey that define the main service m6web_guzzlehttp.

Then you can ask container for your client :

// in a controller

$client = $this->get('m6web_guzzlehttp'); // default client

try {
    $response = $client->get('http://domain.tld/path/to/resource');

    $promises = [
        'first' => $client->getAsync('http://domain.tld/path/to/resource'),
        'second' => $client->getAsync('http://domain.tld/path/to/other/resource')
    ];

    $result = \GuzzleHttp\Promise\unwrap($promises);
} catch(\GuzzleHttp\Exception\ConnectException $e) {
    // connection problem like timeout
}

// use other client
$otherClient = $this->get('m6web_guzzlehttp_other');
$response = $otherClient->get('path/to/resource'); // call http://domain.tld/path/to/resource

The service return a configured guzzle client, for more information on how to use it, you can read the guzzle6 documentation.

The only difference with guzzle6 reside in usage of curl for the redirect responses. You can choose to have the guzzle behavior for redirection by setting the configuration key redirect_handler to guzzle.

When a cache system is available, you can use cache_force and cache_ttl in addition of guzzle options than respectively force clear cache before request and use a specific ttl to a request that override configuration.

$client = $this->get('m6web_guzzlehttp');

$response = $client->get('http://domain.tld', ['cache_force' => true]); // remove cache entry and set a new one

$response = $client->get('http://doamin.tld/path', ['cache_ttl' => 200]); // set ttl to 200 seconds instead the default one

DataCollector

Datacollector is available when the symfony profiler is enabled. The collector allows you to see the following data :

• Method
• Url
• Response code and reason
• Execution time
• Redirect count
• Redirect time
• Cache hit
• Cache ttl

NOTE : If you choose guzzle for redirect_handler, The redirect count and redirect time will always set to zero. Cache informations are available when a cache system is set.

Cache system

You can set a cache for request by adding in the config the guzzlehttp_cache with service subkey who is a reference to a service implementing M6Web\Bundle\GuzzleHttpBundle\Cache\CacheInterface

# app/config/config.yml
m6web_guzzlehttp:
    clients:
        default:
            base_uri: "http://domain.tld/"
            guzzlehttp_cache:
                service: my_cache_service

We provide an "In memory" cache class that you can use by defining a new cache service and use it in Guzzle configuration :

# app/config/config.yml
services:
    company.guzzle.cache.inmemory:
        class: M6Web\Bundle\GuzzleHttpBundle\Cache\InMemory

m6web_guzzlehttp:
    clients:
        default:
            guzzlehttp_cache:
                service: company.guzzle.cache.inmemory

We also provide a cache interface for Redis with our RedisBundle >= 2.4, than you can use in this way:

# app/config/config.yml
m6web_guzzlehttp:
    clients:
        default:
            base_uri: "http://domain.tld/"
            guzzlehttp_cache:
                service: m6_redis.guzzlehttp

m6_redis:
    servers:
        default:
            ip:   '127.0.0.1'
            port: 6379
    clients:
        guzzlehttp:
            servers:   ["default"]     # list of servers to use
            namespace: GuzzleHttp\
            timeout:   2               # timeout in second
            readwritetimeout: 2        # read-write timeout in second
            class: M6Web\Bundle\RedisBundle\CacheAdapters\M6WebGuzzleHttp

For more information on how to setup the RedisBundle, refer to the README in the project.

We provide also the same cache system for APCU throught the ApcuBundle.

Configuration reference

As some configuration options accept multiples data types, all services references must sart with a @ character.

m6web_guzzlehttp:
    clients:
        default:
            base_uri: ""                           # Base uri to prepend on request uri
            timeout: 5.0                           # request timeout
            http_errors: true                      # enable or disable exception on http errors
            redirect_handler: curl                 # guzzle or curl
            proxy: proxy:port                      # Optional. Set the proxy for client.
            guzzlehttp_cache:                      # optional cache
                service: '@my_cache_service'       # reference to service who implements the cache interface
                default_ttl: 3600                  # defautl ttl for cache entry in seconds
                use_header_ttl: false              # use the cache-control header to set the ttl
                cache_server_errors: true          # at false, no server errors will be cached
                cache_client_errors: true          # at false, no client errors will be cached
            headers:                               # optionnal. Default request headers
                User_Agent: "m6web/1.0"            # set header "User-Agent" with the value "m6web/1.0"
                header\_name: "my value"           # set header "header_name" with value "my value"
            auth: ["user", "password"]             # optionnal, http auth user and password
            allow_redirects:                       # false to disallow redirection or an array describing the redirect behavior of a request
                max: 5                             # Maximum redirect to follow
                strict: false                      # use "strict" RFC compliant redirects. (guzzle redirect handler only)
                referer: true                      # add a Referer header
                protocols: ['http', 'https']       # restrict redirect to a protocol
            body: '@my.body.service'               # string | service reference, request body
            cert: ['/path/to/.pem', 'password']    # string | array, Set to a string to specify client side certificate, an array if a password is required
            cookies:                               # boolean | array, false disable cookies
                -
                    name: "bar"
                    value: "foo"
                    domain: "foobar.com"
                    path: "/my/path"
                    max: 100
                    expires: null
                    secure: false
                    discard: false
                    httpOnly: false
                    max-age: null
                -
                    name: tracker
                    value: tracker
            connect_timeout: 1                     # float, Float describing the number of seconds to wait while trying to connect to a server
            debug: true                            # boolean, Set to true to enable debug output with the handler used to send a request
            decode_content: true                   # string | boolean, specify whether or not Content-Encoding responses are automatically decoded
            delay: 10                              # boolean | float, the number of milliseconds to delay before sending the request
            expect: true                           # boolean | integer, controls the behavior of the "Expect: 100-Continue" header
            force_ip_resolve:                      # Set to "v4" if you want the HTTP handlers to use only ipv4 protocol or "v6" for ipv6 protocol.
            form_params:                           # array, Used to send an application/x-www-form-urlencoded POST request.
                foo: 'bar'
                bar: 'foo'
            http_errors: false                     # set to false to disable throwing exceptions on an HTTP protocol errors.
            json: [ foo: 'bar' ]                   # mixed, the json option is used to easily upload JSON encoded data as the body of a request
            multipart:                             # array, Sets the body of the request to a multipart/form-data form.
                -
                    name: 'foo'
                    contents: 'bar'
                    headers:
                        X-foo: 'bar'
                        X-bar: 'foo'
            on_headers: '@invokable.service.id'    # A callable that is invoked when the HTTP headers of the response have been received
            on_stats: '@invokable.service.id'      # on_stats allows you to get access to transfer statistics
            proxy:                                 # string | array, Pass a string to specify an HTTP proxy, or an array to specify different proxies for different protocols.
                http: 'tcp://localhost:8125'
            query:                                 # array, Associative array of query string values or query string to add to the request.
                foo: 'bar'
                bar: 'foo'
            sink: '/path/to/file'                  # String or Psr\Http\Message\StreamInterface service, Specify where the body of a response will be saved.
            ssl_key: ['/path/to/.pem', 'password'] # string | array, Specify the path to a file containing a private SSL key in PEM format.
            stream: true                           # Boolean, Set to true to stream a response rather than download it all up-front.
            synchronous: true                      # Boolean, Set to true to inform HTTP handlers that you intend on waiting on the response. This can be useful for optimizations.
            verify: true                           # Boolean Describes the SSL certificate verification behavior of a request.
            version: 1.0                           # String Protocol version to use with the request.

        otherclient:
            ...

For the headers options, the key in array represent the header name. The underscore will be transformed to hyphen except if it's escaped by a backslash.

Contributing

First of all, thank you for contributing !

Here are few rules to follow for a easier code review before the maintainers accept and merge your request.

• you MUST follow the Symfony2 coding standard : you can use ./bin/coke to validate
• you MUST run the test
• you MUST write or update tests
• you MUST write or update documentation

Running the test

Install the composer dev dependencies

$ composer install --dev

Then run the test with atoum unit test framework

./bin/atoum